Asshmtob to the vulcan last com



July 10, 1923. 1,461,051

(2. M. SEARL LAST Filed April 14, 1922 1 'VENTOR m W ATTORNEY/'5"Patented dilly lil Ml ii" "ll i l li tel. ll how .i

totem .lllilliilitirhltlltt TU THE VUllfillil LAST GUIMI- Illullili'il.

itpplieotion filed April. 1 t, Serial No.

To all whom it may concern .ie it known that l, Cnrnron ill. filmin acitizen of the llnited Flttttes end a, resident of Portsmmrth, county oiScioto Stete of Ohio, have invented certain new and useful improvementsin l ts Gillillltfiil the fol lowing is it specification.

My invention reletes to an improvement in lasts of the type which aredivided tx'dl1$ versely into it toe port and 1 heel port, and an objectthereotis to so construct the lost that the some will he held either incollapsed position or extended position as the case may he. i

it further object oi my invention is the provision of a joint betweenthe two ports of the last which Will prevent vertical dis placement oi:the last ports When the is extended hot which Will permit of move mentott'the last ports to eollspsed position when so desired.

A further object o't mp invention is the provision oil on improved.torrn. oil linlr eonnect-ino; the ports, displacement of one end ot thelinlr relzttively to one inst pert ,heine prevented h at poir ot pins,While displacement ot the other end. of the linlr with respect to theother lost port is pro-- vented by or singl pin. These pins are sopositioned relatively to each. other and to the ifuiermn oi? the lostports that :1 line drawn through the center ot the pin in one lost portand the center oil one ot the pins in the other lest port will tellhelorv the tel crnm, ot the lost parts when the lost is err tended Whileat line drown through the contor of the one pin in one lest port and thecenter oi the other pin in the other lest pert will tell shove thistlnlcrnm when the lost is eollopsed. H

in the accompanying;drawingihztve diestinted lost in extended positionwith e suhstantisllv horizontoliv on e line l. e Vent 5 the hettom oilWlilflll to point or :tnleij nm he... the

upper port of the last so as to permit 0t roletive movement of the twolast parts from nded to collapsed iosition. it will he soon thereforethat the heel pert innv he said to he niovided With it rectanoinlergroove, the iines 3 and i constituting the two sides oi? this groove.The toe port on the other hand is provided with a restore ,elilorprojeotion. 7 complementary to the recf engnilnr groove in th heel part,this projection fitting; into the groove in the heel pert when the lostports are extended to ettectively prevent vertical displacement of thelost ports. i l hen the lost parts are moved to eoliopsed position theypivot about the edge 6 ol? the groove as a fulcrum, the projection 7 onthe toe part moving out of the reetononiler groove in the heel port.-

lho toe port it is provided With a. vertir-ellv extending recess 8 andthe heel part is provided with e similar recess 9 these recesses beingprovided for the reception of at it). This linlr is in the Form 0t 2tfiat motel iwmher hent hock upon itself about it s 'irinn pin 11ertendingr transversely of e heel port 2, this pin preventingdisplacement of the looped end oi the link relatively to the heel port.The other ends of this link extend into the recess 8 in the toe pert endare provided with hent over portions or proiootions on d iii. The bentover portion 12 receives or is best around e spring; pin 14 in the toeport While the proiectionlil receives or is her t around o, spring pin15 also in the too so that the end oi the link reeeive fl hr he toe portis held dis plneement hv the pins ill and The pins ti: and are soloeoxted with respect to the pin 11 that the pin 14L will cooperate withthe proiection or turned over Portion oi the linlr when the last is (X--tended while the pin 15 will r-oopersrte with the projection or turnedover portion l3 .Whon the lost ports are eolleitsed. in order .nded.\the pin i ited not ooopernpt with the porieetion till 12 to thereby holdthe last extended. The spring pin 15 is so located with respect to thepin 11 that a line passing through the centers of these pins will fallabove the edge 6 of the rectangular groove when the last parts arecollapsed, the pin 15 at this time cooperating with the projection orturned over portion 13 to thereby hold the last collapsed.

The pins 11, 14: and 15 being of resilient material such as springsteel, will permit the last parts to be moved from extended to collapsedposition and vice versa, these pins yielding as the last parts pass fromone position to the other and thereafter holding the parts in adjustedposition. While I have described a specific embodiment of my inventionitis to be understood that changes may be made in the details ofconstruction here illustrated and described within the purview of myinvention.

I claim:

1. A last divided transversely into a toe part and a heel part, a link,a pin for preventing displacement of one end of said link with respectto one last part, projections on the opposite end of said link, and apair of pins cooperating with said projections for preventingdisplacement of this end of the link, one of said pair of pinscooperating with one projection when the last is extended and the otherpin cooperating withthe other projection when the last is collapsed. I

2. last divided transversely into a toe part and a heel part, a link, aspring pin by which displacement of one end of said link is prevented.projections on the opposite end of' said link, and a pair of spring pinsfor preventing displacement of this end of the link, a pin of said paircooperating with one projection when the last is extended andthe otherpin of said pair cooperating with the other projection when the last iscollapsed.

to the pin at the other end of the link that position, the other pin ofsaid pair cooperating with the other projection on said link when thelast parts are collapsed and being so located with respect to the pin atthe other end of the link that a line passing through the centers ofsaid last-mentioned pins will fall above the pivotal point of the lastparts when the last parts are in collapsed position.

4;, A last divided transversely into a toe part and a heel part, a pincarried by the heel part, a link bent around said pin and having its twoends extending into a recess in the toe part of the last, a pair of pinscarried by the toe part of the last andv about which the forward ends ofthe link are bent so that the forward ends oi the link are held by saidpins against displacement, one of said pins in the toe part being sopositioned with respect to the pin in the heel part that a line passingthrough the centers of said pins will fall below the fulcrum of the lastparts when the last parts are in ex tended position, the other pin inthe toe part of the last being so located with respect to the pin in theheel part that a line passing through the centers of theselast-mentioned pins will fall above this fulcrum when the last parts arein collapsed position.

5. A last divided transversely into a toe part and a heel part, one ofsaid last parts being provided with a substantially rectangular groove,the other of said parts being provided with a complementary projectionextending into said groove, a link, a pin in one part of the last forpreventing displacement of one end of the link, pins in the other partof the last for preventing displacement of the opposite end of the link,said pins being so located that a line passing through the centers ofone of the pins in the toe part of the last and the pin in the heel partof the last will fall below the edge of said rectangular groove when thelast parts are in extended position and so that a line drawn through thecenter of the other pin in the toe part and the pin in the heel partwill fall above the edge of said gropve when the last parts are incollapsed position.

6. A last divided transversely into a heel part and a toe part, one ofsaid last parts being provided with a rectangular groove, the other lastpart being provided with a complementary projection extending into saidgroove, a link, a sprlng pin for preventing displacement of one end ofsaid link with respect to one last part and a pair of spring pins forpreventing displacement of the other end of said link with respect tothe other last part, one pin of said pair being so located with respectto the spring pin in the other last part that a line passing through thecenters of said pins will fall below one edge of the rectangular groovewhen the last parts are extended, the other spring pin of said pairbeing so located with respect to the spring pin at the opposite end ofthe link that when the last parts are collapsed a line passing throughthe centers of said last-rnentioned pins will fall above said edge ofthe rectangular groove.

7. A last divided transversely into a toe part and a heel part, the heelpart being provided With a rectangular groove, the edge of whichtogether with a portion of the face of the toe part constituting ahearing about Which the last parts are movable, a complementaryprojection in the toe part extending into said groove a link, a pin forpreventing displacement of one end of said link with respect to the heelpart of the last, pins for preventing displacement of the other end ofsaid link with respect to the toe part of the last, said pins being solocated that When the last parts are moved to collapsed position theprojection on the too part will disengage the recess in the heel partand a line passing through the centers of one of the pins in the toepart and the pin in the heel part will fall alcove the edge of saidrectangular groove, a line drawn through the centers of the other pin inthe toe part and the pin in the heel part falling below the edge of saidgroove when the last parts are extended, the projections on the toe partwith the last so extended projecting into the groove in the heel part toprevent relative vertical movement of the two last parts.

This specification signed this 10 day of April, 1922 CLINT 0N M. SEARL.

